Keysight N5227B Service Guide 4-7
Troubleshooting
Power Up Troubleshooting
Power Up Troubleshooting
Check your network analyzer for evidence that it is powering up correctly.
Perform the following steps and make sure that the analyzer is displaying
correct behavior as noted in the following steps.
Step 1.
Disconnect all peripherals and plug in the network analyzer. Before the
analyzer is powered on, the line switch should glow yellow and no other
lights should be on.
Step 2.
Turn on the network analyzer.
— The line switch should glow green.
— The fans should be audible.
— The display should flash and then show the hardware boot-up sequence.
This process checks the RAM and communication with the hard disk drive.
These checks return an error message if a problem is detected.
— The Windows operating system should start.
— The network analyzer measurement interface should open with an S
11
measurement displayed.
Step 3.
If the analyzer powers up correctly, continue troubleshooting with
Panel Troubleshooting” on page 4-15
.
Step 4.
If the analyzer does not power up correctly, follow these troubleshooting
steps:
— If the line switch does not glow, go to
“Power Supply Check” on page 4-8
.
— If you cannot hear the fans operating, go to
“If the Fans Are Not Operating”
— If the line switch displays a green light and the fans are operating (audible),
but the display remains dark, go to
— If the instrument appears to abort the network analyzer measurement
interface process, contact Keysight. Refer to
.
Immediately unplug the instrument from the ac power line if the unit
shows any of the following symptoms:
— Smoke, arcing, or unusual noise from inside the analyzer.
— A circuit breaker or fuse on the main ac power line opens.
Содержание N5227B
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